4mm and 5mm guitar truss rod wrench with ball end are lengthened, perfect for narrow or deep truss rod likes guitar adjustments.Gauge: 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 1/20in, 1/8in, 3/16in.Guitar hex wrench set is made of carbon steel, durable and highly wear-resistant.Various gauges suitable for most guitar screw adjustments.For locking hexagonal screws on , adjusting the guitar neck.Pipe wrench 6.35MM (1/4 inch) model is suitable for most folk guitar series, (not suitable for classical guitars of this brand)The pipe wrench 7MM model is suitable for some Korean , , and guitars. according to the actual size of your pianoPipe wrench 8MM (5/16 inch) model is suitable for some American electric guitars and ESP electric guitarscolour:blackmaterial:metalPackage Contents:1 x 4mm ball wrench1 x 5mm ball wrench9 x wrench kit3 x pipe wrenchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.