Features: New, high quality, industrial grade. Use in router table only. Shank diameter: 6.35mm and 12mm; the tool holder accommodates two different sizes—one for single cutter and one for multiple cutters. Includes 6 pieces of 3-wing cutters. C2 carbide tipped with mini-grain grade for increased strength and superior resistance. High abrasion resistance, high precision, and high toughness. Build-up and heat resistant PTFE coating. Assembly includes 5 individual finger cutters, 1/2" shank arbor, 1 straight top cutter, ball bearing guide, shims, spacers, and washers. Cut one-finger through five-fingers in multiple passes. Both cuts are performed the same way; simply turn over the counter-cut for a perfect fit. Name: Adjustable slot cutter Material: Carbide Color: Yellow + Silver Shank Diameter: 1/4" Cutter Diameter: 1-7/8" Cutter ID: 5/16" Cut Height (Kerfs): 1/16", 3/32", 1/8", 5/32", 3/16", 1/4" Bearing Diameter: 0.865" (22 mm) Overall Length: 2-5/8" Packaging includes: 1 set of 2 adjustable slot cutters Content limited to the above package; other items not included. Note: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement error allowance: +/- 1-3 cm.