The BT50 APU13 Economy Keyless Drill Chuck from Omega Products is designed for BT50 spindle machines, delivering fast, tool-free bit changes with reliable clamping for everyday drilling tasks. It accepts drill bits from 1 mm to 13 mm, with a 100 mm gauge length for solid seating and predictable performance. Its keyless operation eliminates the need for a chuck key—twist to lock or release the bit and move on to the next hole with confidence. Keyless operation for fast bit changes: Quickly lock or release drill bits with a simple twist, reducing setup time and eliminating the risk of lost chuck keys. APU grip for dependable drilling: Automatic Precision Universal design provides a secure grip on bits from 1 to 13 mm, minimizing slippage and improving hole quality. BT50 compatibility and robust build (100 mm gauge): Specifically designed to fit BT50 spindles with a sturdy 100 mm gauge length for stable, repeatable performance in demanding environments. This chuck helps you streamline your workflow by cutting tool-change time, improving hole quality through a consistent grip, and delivering reliable performance across repeated cycles. Built to endure daily shop use, it offers predictable clamping and long service life so you can focus on the job rather than fiddling with equipment.