For sale is a LYNDEX NMTB 40 TAPPER TAP HOLDER WITH SPRING. It allows some wiggle room for the tap to travel vertically inside the tool holder, if you know what I mean. Included, but NOT pictured, is one tap holder that fits it, with approximately 7/32" square shank hole. I WILL COMBINE SHIPPING $12.34 for up to 6 NMTB40 Tool Holders.