Diager 390H Diamond Core Bit Adapter Manual Knockout Punch Kit Includes both 1/4-inch and 3/8-inch

Includes both 1/4-inch and 3/8-inch arbor sizes for tool compatibility

Steel base size:993x165mm，With 2pcs steel support frame

00 SDBIM21HL133 10PCS/SET PH2 +SL6 65mm       270

silence and energy savings

drilling diameter in wood 68 mm Max

Diager 390H Diamond Core Bit Adapter Manual Knockout Punch Kit Includes both 1/4-inch and 3/8-inchThe Diager 390H Diamond Core Bit Adapter is designed for connecting compatible diamond core drilling accessories and core bit systems with different thread requirements. Built for professional coring applications, this adapter supports connection between 1 2" female and 1 1 4" female threaded setups used in compatible concrete coring and drilling equipment. The Diager 390H adapter is suitable for contractors, installers, plumbers, electricians,