Product Description:Steel constructionBarrel nut wrenchMuzzle device wrenchSpanner wrench for old and new style castle nutsLanyard / hanging holeErgonomic handlePerfect for cleaning, service, or weapon assembly Colors: BlackMaterial:Steel,RubberSize:20.8*3.8*0.25cm/8.2*1.5*0.1inchSuit for AR15/M4 Package includes:1*Spanner