Will break 520 to 530 chain Able to press on and off 520 and some 525 clip type master link side plates Light weight, 6 oz. including press plates and handle (8 oz. with pouch) Extractor pin will push link pin completely through link and side plate Requires 14 mm wrench or socket to turn extractor bolt Handle detaches for easy storage. To reduce the weight even more an MP Tool (08-0161), 8 mm combination wrench or an 8 mm socket with extension can be used as the handle Custom pouch holds tool securely and includes pocket for extra chain or master links and a large accessory pocket Body forged from high-strength 4130 chromoly Body bolt and extractor bolt manufactured from billet high-strength 7075 T-6 aluminum Replaceable pin is heat treated for strength and wear resistance Press plates manufactured from light weight 6061 T-6 aluminum Perfect addition for tool packs For use on clip type master links with press fit side plates only Does not rivet master link or chain pins