īlade for Nylon (each): Length of Blade: 3/4'.Safer and More Precise Than Cutting Hinge Slots With A Hobby Knifeīlade for CA (each): Length of Blade: 3/4' Unique Counter-Sawing Dual-Blade Action Removes Wood To Form A Perfect Hinge Pocket. Quickly Cuts Clean, Straight Perfect Hinge Slots Without Gouging Or Being Hindered By Hard Spots In The Wood Great Planes Slot Machine Blade Med Nylon Hinge (2) GPMR4016 These are the Slot Machine Motorized Hinge Slotting Tools Replacement Nylon Hinge Slotting Blades.