Features and Benefits:•Jobsite versatility: Lets you reduce thread size from 1-1/4"-7 to 5/8"-11•Long life: Durable, high-quality adapter withstands heavy daily useThe Milwaukee® diamond bit adapter increases your capacity for concrete coring on the jobsite. Due to prolonged, heavy use some components may need to be replaced. Use only Milwaukee specified replacement parts to achieve maximum life and performance from your Milwaukee Tool.