Durable construction: made from long-lasting materials to withstand regular shop use and reduce the need for frequent replacement. TTS straight shank for compatibility: built with a TTS 3/4-inch (1.9 cm) straight shank so it fits TTS-compatible tool holders and spindles without adapters. ER16 collet chuck for secure clamping: equipped with an ER16 collet to hold tools tightly and maintain concentricity, improving cut quality and reducing tool movement. Wide clamping range: securely grips tools from 3/16 inch to 1/2 inch, covering common end mills, drill bits and cutters used in light to medium machining. Why you need it Prevents tool slip and runout: the ER16 collet system provides reliable radial accuracy so tools stay centered under load, producing cleaner cuts and fewer rejects. Saves setup time: direct TTS 3/4-inch shank compatibility eliminates the need for additional adapters, simplifying tool changes and reducing downtime. Versatile tool holding: the broad 3/16–1/2 inch range lets you use a single chuck for multiple tool sizes, reducing the number of holders you must stock. Key attributes Function: ER16 collet chuck for precision clamping of rotary tools. Compatibility: TTS 3/4-inch (1.9 cm) straight shank fits TTS-style spindles and tool holders. Size: collet capacity 3/16 in to 1/2 in. Material & performance: constructed from durable materials to provide consistent performance in workshop and light industrial environments. Practical applications CNC milling: hold small end mills and cutters for precision contouring and finishing operations. Drill press or router use: secure drill bits and router bits in setups that accept a TTS 3/4-inch straight shank. Light production or prototyping: use a single chuck to switch between common tool sizes during short runs or prototype cycles. What to expect Reliable clamping for routine machining tasks. Straightforward installation on TTS-compatible equipment. Reduced need for multiple holders thanks to the wide clamping range. Note: Specifications are ER16 collet system, clamping range 3/16–1/2 inch, and TTS 3/4-inch (1.9 cm) straight shank.