Ginode 8pcs Dowel and Tenon Center Set, 1/4" 5/16" 3/8" 1/2" Center Dowel Pins + 8Pcs Drill Stop Set, for 1/8,3/16,1/4,5/16,3/8,7/16,1/2,5/8 inch Diameter Drill Bits

?8x Dowel and Tenon Pins: ?Specification: ? Material: steel ? Color?silver ? Surface treatment: chromeplate ? Size: 1/4" 5/16" 3/8" 1/2" ? Quantity: 8pcs (2pcs per size) ?Features: ? Chrome plated so as not to mark wood. ? Connects dowel to block, then cover the dower by another block. ? For accurate alignment of drill holes when dowel-pinning joinery. ? Using drill bit to align with the round imprinted to make two blocks join perfectly. ?8x Drill Stop: ?Specification: ? Material: carbon steel ? Sizes: 1/8,3/16,1/4,5/16,3/8,7/16,1/2,5/8 inch ? Thickness: 3.5mm ? Height: 8mm ?Features: ? Come with hex wrench. ? Setscrew type collar will not damage bits. ? Works with both standard and brad-point bits ? Compatible with any twist type bit for wood metal concrete or masonry with hex set screws. ? Mainly for fixing the drill bit,limited the depth of drill holes,make depth of the hole consistent. ?Package includes: ? 8x Dowel Centers ? 8x Drill Chuck ? 1x Hex Wrench