Features 1Fitment: The adapter is a replacement for S W, for M P22 Does NOT fit M P Compact, for Walther P22. And other pipes with M8x0.75mm threads. 2High Quality Material: Made of heavy duty metal material with, which is durable and has high strengh for long time use. 3Function: The adapter features two flat ridges for installation or removal with a wrench and includes a 1/228 thread protector for use without an accessory or for storage. 4Wide Adaptability: This product is also suitable for other M8x0.75mm threaded pipe, which takes advantage of many readily available accessories on the market. 5Fine Workmanship: The thread protector has a very fine diamond knurled and is made of high carbon steel and finished with black oxide. Specification Item Type: Thread Adapter Material: Metal Pipe End Thread: M8 (8mm/0.31in) x 0.75mm/0.03in Adapter OD Thread: 1/2-28 Overall Length: Approx. 1in/25.4mm Largest Diameter (with protector cap installed): 5/8in Package List 1 x Thread Adapter