【Versatile Compatibility】: Designed to fit for models 150, 190, and 250, this air chisel head is good for a variety of pneumatic tools including air chisel, wind chisel, and rust removers 【Construction】: Air Hammer Spring Crafted from metal, this chisel head ensures long last durability and reliable performance in demanding work environments 【Compact Dimensions】: With a size of 35x32mm, the chisel head is compact yet effective for precision tasks and easy handling during operation 【Multifunctional】: suitable for use with air hammers and pneumatic , providing flexibility for various projects,pneumatic chisel universal spring,air hammer spring 【Portable and compact】: the small and lightweight design makes it easy to carry and store, suitable for use in multiple locations,air hammer retaining spring,replaceable air spring Specification: Material: Metal Size Chart: 3.5cmx3.2cm/1.38inchx1.26inch Package Includes: 3x Air Hammer Spring Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.