---
product_id: 570070692
title: "Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black"
price: "R$138"
currency: BRL
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.br/products/570070692-flex-lock-strap-blocks-locks-straps-in-place-protect-your
store_origin: BR
region: Brazil
---

# Protects your guitar Secure strap lock No hardware needed Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black

**Price:** R$138
**Availability:** ✅ In Stock

## Summary

> 🎸 Lock your strap, free your performance!

## Quick Answers

- **What is this?** Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black
- **How much does it cost?** R$138 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/570070692-flex-lock-strap-blocks-locks-straps-in-place-protect-your)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Set of Four:** Complete pack to secure multiple straps or share the safety with your bandmates.
- • **Snap & Play:** Quick, tool-free attachment for instant strap security on any standard guitar strap.
- • **Lock It Down:** Transforms any guitar strap into a reliable locking strap—no slip, no drop.
- • **Lightweight Shield:** Ultra-light 10g design adds protection without weighing you down on stage.
- • **Zero Mod, All Gain:** No drilling or hardware changes—preserve your guitar’s original condition effortlessly.

## Overview

D'Addario Flex Lock Strap Blocks provide an easy, no-modification solution to secure guitar straps and protect your instrument. This set of four lightweight plastic/rubber blocks snaps onto any guitar strap, preventing accidental release without the need for additional hardware or tools.

## Description

Free delivery and returns on eligible orders of £20 or more. Buy D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black at desertcart UK.

Review: Actually does the job. - These give an additional level of confidence to what can only be described as the terrible strap attachment found on most guitars - designed to fail eventually. These aren't in the same league as the dedicated quick release devices such as Schaller strap locks, but if you are keeping the strap on the same guitar then they will help to keep the stap in place. Depending on the strap thickness and guitar mount these can be easy to fit or not! Found on one guitar had to unscrew the mount slightly, fit the flex lock strap and then tighten it up again. Well worth having if not using a quick release type device, plus here is no hole drilling etc. Would I buy again - Yes.
Review: Perfect - I've been meaning to get some strap locks for a while and when I saw these, with the little tabs on the side, I thought they'd work for me as I might need to change the strap. And they are. They work perfectly, go on well and come off easily- but not until you take them off. No more having to bend down at the speed of light to catch my guitar before it take the floor out.

## Features

- PROTECT YOUR GUITAR: D'Addario Flex Lock Strap Blocks–protecting your instrument and your performance. Turn your favorite guitar strap into a locking guitar strap.
- NO ADDITIONAL HARDWARE: Affordable strap lock solution without the need to replace any hardware. Strap security at a low cost without needing to mod your guitar.
- NO MODIFICATIONS: Without need of modification, the Flex Lock Strap Block clips onto your guitar strap to prevent your strap from releasing accidentally.
- EASY TO ATTACH: Snap on top of any Guitar Strap for a secure fit
- D’ADDARIO ACCESSORIES - D’Addario Accessories (formerly Planet Waves) has been leading the industry in innovative and problem-solving products that serve musicians worldwide.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 10 x 10 x 5 cm; 10 g |
| Item model number | PW-FLSB-04BK |
| Body Material | Plastic/Rubber |
| Colour | Black |
| Material Type | Plastic |
| Item Weight | 10 g |

## Images

![Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black - Image 1](https://m.media-amazon.com/images/I/61s+R59XfkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Actually does the job.
*by B***T on 30 April 2024*

These give an additional level of confidence to what can only be described as the terrible strap attachment found on most guitars - designed to fail eventually. These aren't in the same league as the dedicated quick release devices such as Schaller strap locks, but if you are keeping the strap on the same guitar then they will help to keep the stap in place. Depending on the strap thickness and guitar mount these can be easy to fit or not! Found on one guitar had to unscrew the mount slightly, fit the flex lock strap and then tighten it up again. Well worth having if not using a quick release type device, plus here is no hole drilling etc. Would I buy again - Yes.

### ⭐⭐⭐⭐⭐ Perfect
*by A***R on 8 November 2024*

I've been meaning to get some strap locks for a while and when I saw these, with the little tabs on the side, I thought they'd work for me as I might need to change the strap. And they are. They work perfectly, go on well and come off easily- but not until you take them off. No more having to bend down at the speed of light to catch my guitar before it take the floor out.

### ⭐⭐⭐⭐⭐ THEY DO THE JOB VERY WELL
*by R***2 on 25 November 2025*

These are different to my usual D'Addario strap locks, but they work very well indeed and I'm happy to recommend them 🙂🎸🎸🎸🎸🎸

## Frequently Bought Together

- D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black
- D'Addario Dual-Lock Guitar Strap Lock - Guitar Strap Locks Set - Protect Your Instrument with No Modifications or Hardware - Secures Cables - Easy to Attach - 1 Pair,Black
- Ernie Ball Polypro Guitar Strap, Black (P04037)

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**Shop now:** [https://www.desertcart.com.br/products/570070692-flex-lock-strap-blocks-locks-straps-in-place-protect-your](https://www.desertcart.com.br/products/570070692-flex-lock-strap-blocks-locks-straps-in-place-protect-your)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-14*