Slot features are similar to rectangular pockets but have round ends equal in diameter to the width of the slot. Bottom radius. Length. LAVIE 1pcs 1/4" 6mm Shank T-Slot Cutter Router Bit Hex Bolt Keyhole Knife. Chamfer. Chamfer. Length. Width. . Width. T-Slot Frezen; MateriaalTungsten Cobalt Alloy; Merknaamlavie. Depth. Bottom radius. Beschrijving. Beschrijving. T-Slot Frezen; MateriaalTungsten Cobalt Alloy; Merknaamlavie. Depth. LAVIE 1pcs 1/4" 6mm Shank T-Slot Cutter Router Bit Hex Bolt Keyhole Knife. Slot features are similar to rectangular pockets but have round ends equal in diameter to the width of the slot.