Lapidary Core Drill Set - 10pcs (6-30mm) potion Approximate Size of 1 piece:

Approximate Size of 1 piece:  40mm x 50mm x 50mmApproximate Weight of 1 piece: 90g

they often end up having to replace it

Stone Mined In: MadagascarStone Type: LabradoriteMetal Type: Sterling Silver

Approximate size of 1 tooth: 8cm x 6

Pieces: 30

Lapidary Core Drill Set - 10pcs (6-30mm) potion Approximate Size of 1 piece: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, as well as making large bead holes. Made In: China Drill Bit Sizes: 6, 8, 10, 12, 14, 16, 18, 20, 22, 30mm Shaft Diameters range from : 5. 4mm 8. 3mmOverall Length: 50mm Weight of all drill bits : 160g Quantity: 10 Piece set