This 8-spline shank adapter designated 1.5 8SP with a 1 in. NC thread is the direct drop-in replacement for part number EPI-IWNC1, reference 5697001238. The splined shank engages the drills rotation while the anvil end takes the piston blow, feeding impact energy into the string the way every bar in our striking bar and shank adapter range does.

Match the 1 in. NC thread through the rest of the string when ordering extension rods and bits. If the drills data plate or the old part number does not line up, the drill steel adapters buyers guide shows how to identify a shank adapter from its splines, thread and length or measure the old bar and match it from the full striking bars and shanked rods category.

• 8-spline shank engages the chuck rotation drive of the drill
• 1 in. NC thread connection to the drill string
• Direct replacement for part number EPI-IWNC1, reference 5697001238
• Anvil end takes the piston blow and transfers impact energy into the drill steel
• Stocked by Crowder Supply in Denver with its full shank adapter range