Lapidary Core Drill Set - 10pcs (3-50mm) smoothing Approximate Weight of 1 Case:

Approximate Weight of 1 Case: 11g

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Approximate Size of 1 piece: 27mm x 22mm x 14mm

Description: Think of them as little beetles that used to scurry along the ocean floor

Approximate weight of 1 piece: 12g

Lapidary Core Drill Set - 10pcs (3-50mm) smoothing Approximate Weight of 1 Case:Description: This is a ten piece set of lapidary grade core drills. They are best suited for a drill press and are great for hollowing out the inside of stone ring shanks and bangles, as well as making large bead holes. Made In: China Drill Bit Sizes: 3, 4, 5, 6, 8, 10, 12, 18, 32, 50mmShaft Diameters range from : 2. 4mm 8. 3mmOverall Length: 50mm Weight of all drill bits: 145g Quantity: 10 Piece set