🔨 Unlock Your Potential with Bosch's HA3JAW! Optimized for use in drill-only mode on SDS-plus rotary hammers. Constructed with a robust steel metal sleeve for long-lasting use. Keyless ratcheting for fast and secure bit changes. Effortlessly drills through masonry, brick, and block. Designed for all Bosch and competitive SDS-plus hammers. Keyless ratcheting 1/2 inch thread size Durable steel sleeve The Bosch HA3JAW Keyless Chuck is a versatile and durable tool designed for efficient drilling in masonry, brick, and block. With a universal fit for all Bosch and competitive SDS-plus hammers, it features a quick-lock mechanism for easy bit changes and is built to withstand tough conditions.