Highly Robust - The SDS plus Adapter is highly robust and is specially designed to withstand the high power of rotary hammers. Its S2 Modified Steel and optimised heat-treatment process provide the adapter with extra endurance for high performance, making it extremely sturdy for long-lasting work. This makes the product ideal for heavy-duty screw-driving applications such as plant installations or heavy industrial work. . It fits on 1/2-inch external square drive and is suitable for rotary hammers with SDS plus shank systems Fits all SDS plus rotary hammer drills. Features and Benefits • Highly Robust • The SDS plus Adapter is highly robust and is specially designed to withstand the high power of rotary hammers • S2 Modified Steel and an optimised heat-treatment process provide extra endurance for high performance Specifications External square drive end: 1/2" Shank: SDS plus Shank type: SDS plus Width across flats,: 1/2inches