Zhushan 5pcs Step Drill Bit SetHigh Speed Step Drill Bit HSS Cobalt Multiple Hole 50 Sizes Titanium Step Drill Bit with Aluminum Case

1. Carrying case : Includes aluminum carrying case 2. A complete sae set: Two popular 1/4" and 3/8" shank sizes to cover a wide range of drilling requirements 3.Large bit has 3-sided shank and small bits have hex shank to prevent slip in drill chuck. 4.Automatically deburrs holes as you drill. 5.Long Life True M2 high speed steel,Includes protective padded aluminum case. Description?This item including 5 different sizes drills you can choose your size you want to use. And this item has a wonderful packing box to protect the 5 drills. The packing box looks nice and taking conveniently. This item must be the best choice for you. Specification? Material: High Speed Steel Sizes: -#1: 3/16" to 1/2" 6 Steps (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'') -#2: 1/8" to 1/2" 13 Steps (1/8", 5/32", 3/16'', 7/32", 1/4'', 9/32", 5/16", 11/32", 3/8'', 13/32", 7/16'', 15/32" , 1/2'') -#3: 1/4" to 3/4'' 9 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4") -#4: 1/4" to 1-3/8"' 10 Steps (1/4'', 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8") -#5: 3/16" to 7/8" 12 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8") Warranty: one year Gross Weight: 451*g Net Weight: 453*g