Features: This neat tool will work on any knob, does not matter the guitar brand. High impact plastic does not scratch your pickguard, paint or metals. This is the best regular maintenance tool for you can do for your electric guitar. After pushing outer rings down to tighten, there is room to put your finger through and pull. The inner grips fits under bottom of knob, the outer rings is pushed down to tighten grip on knob. Specifications: Material: ABS Color: Black/Red Package Weight: approx.10g Size: As The Picture Shows Note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks! Package includes: 1Pc Guitar Knob Puller Tool