ITM, 1 pc. X-Tender Adaptor, 1-3/16" diameter x 7-1/2" length. Drill bit diameter must be 1-1/4" or larger for X-tender to pass through the hole. X-Tender adapter has double locking SDS-MAX inputs. Use with X-tender extension shafts. Extends any SDS-max tool. (XT6700)