Robert Bosch Tool Group XB-UL1 Underlayment X Bit 5/32 in 5-pack

Product Description

The ROBERT BOSCH TOOL GROUP XB-UL1 is a 5/32-inch carbide Underlayment X Bit designed for rotary cutting tools used in flooring and tile installation. This 5-pack delivers fast, accurate cutouts in fiber backerboard and other underlayment materials. Carbide construction gives these bits a significant edge over conventional zip bits, cutting up to 3 times longer and 2 times faster. Flooring installers and tile setters working on backer panel layouts will find these bits well suited to repetitive plunge and perimeter cuts in demanding substrate materials.

The XB-UL1 bits are intended for use with compatible rotary cutting tools in residential and light commercial flooring applications. Primary use cases include cutting outlet holes, drain openings, pipe penetrations, and custom shapes in fiber backerboard and similar underlayment panels before tile or stone installation. Each pack contains 5 bits, supporting extended job-site use without interruption.

Key Features

• Carbide construction cuts 3 times longer than conventional zip bits
• Cuts 2 times faster than conventional zip bits for improved productivity
• 5/32-inch diameter sized for standard rotary cutting tool collets
• Optimized for plunge and perimeter cuts in fiber backerboard
• Suitable for other underlayment materials beyond fiber backerboard
• 5-pack quantity supports extended job-site use

Compatibility

Designed for use with compatible rotary cutting tools that accept 5/32-inch shank bits, for cutting fiber backerboard and other underlayment materials.

Installation Notes

Installation of these bits should be performed by flooring professionals or experienced installers familiar with rotary cutting tools. Disconnect or power off the cutting tool before inserting or removing bits. Always wear appropriate eye and respiratory protection when cutting fiber backerboard, as the material generates fine silica-containing dust. Follow the tool manufacturer's collet tightening procedure to ensure the bit is fully seated before operation.