Type | Usual format |
Surface set (Coring bits) | φ60/41.5, φ75/54.5, φ91/68, φ94/74, φ110/90, φ113/93, φ133/93, φ153/133 |
Surface Set (Non-coring bits) | φ75, φ94, φ110, φ113 |
Impregnated | φ60/41.5, φ75/54.5, φ91/68, φ94/74, φ110/90, φ113/93, φ133/93, φ153/133 |