General description Durable and practical, this keyless drill chuck holder is designed for fast and stable performance. It is suitable for a 9.3mm axle and is made from a combination of plastic and metal, ensuring longevity and reliability. Technical specifications Chuck diameter: 40mm / 1.57 inches Chuck height: 50mm / 1.96 inches Hex chuck adapter size: 50mm x 6mm / 1.96 x 0.23 inches