Bosch XB-UL1 RotoZip Underlayment Xbit, 1 pack (for Fiber Backer board)

This innovative underlayment bit from Bosch is engineered for strength and efficiency, featuring a design that is five times stronger and twice as fast as traditional options like the Zip® Bit. With a 5/32 inch shank, it is specifically crafted for use with RotoZip cut-out tools, making it an ideal choice for precisely cutting through tough materials such as backerboard, cement board, and Fiberock® panels. The bit’s durable steel construction ensures longevity and reliability during demanding tasks, while its compact overall length of 2.25 inches enhances maneuverability in tight spaces.