ArtisanShow 5PCS HSS Cobalt Step Drill Bit Set Multiple Hole 50 Sizes Cobalt Titanium Conical Cone Drill Hole Cutter Core Drill Bits with Aluminum Case

• ✅[Specifications] The step drill bit set includes five standard HSS step drill bits that can replace 50 individual drill bits. A drill bit can be used as a substitute for multiple drill bits to meet different needs.
• ✅[Parameters] Double cutting blades and X-type openings design ensures a faster and smoother cutting, and 3-sided shank design prevents slip in drill chuck. It can automatically deburr holes while drilling to keep the drill bit clean.
• ✅[Wide application] Provided with small pressure and the sets can cut through the wood, sheet metal, steel and other surfaces. Hard automatic center punch can mark the positioning hole to prevent the drill and the screw from sliding.
• ✅[Material] Made of strong and durable high speed steel coated with titanium , high speed steel make it last longer than others, titanium coating ensure easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.
• ✅[Premium Quality] High quality. All our products are extensively tested to comply with rigorous and strict QC standards. We offer a 60-day refund guarantee.

Main Features: -- The step drill bit set includes five standard HSS step drill bits that can replace 50 individual drill bits. A drill bit can be used as a substitute for multiple drill bits to meet different needs. -- Double cutting blades and X-type openings design ensures a faster and smoother cutting, and 3-sided shank design prevents slip in drill chuck. -- Provided with small pressure and the sets can cut through the wood, sheet metal, steel and other surfaces. Hard automatic center punch can mark the positioning hole to prevent the drill and the screw from sliding. 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") Package weight: 0.450kg Package Size(L x W x H): 25 x 8.00 x 5.00 cm / 9.84 x 3.15 x 1.97 inches Package Contents: 1 x 1/4-1-3/8 ladder drill bit,1 x 3/16-7/8 ladder drill bit,1 x 1/4-3/4 ladder drill bit,1 x 1/8-1/2 ladder drill bit,1 x 3/16-1/2 ladder drill bit,1 x Aluminum Box Product Safety Disclaimer: We do not accept any responsibility or liability for misuse of this or any other product. All our products are extensively tested to comply with rigorous and strict QC standards. Professional Services: If you have any doubts about our products, please feel free to contact us. After you receive the product, if you have any question about the use of methods and product performance, we will provide you with professional, caring sales service. We offer a 60-day refund guarantee.