Description This is a control knob for guitar which can be used to control the effect of a variety of functions. Can be used for synthesizers electric guitar etc. This volume tone knob for guitar is useful and practical gifts for friends who own guitars and bass. Features -Color:Black -Material:Aluminum -Size:4.35X4.35X2.50cm/1.71X1.71X0.98in -Diameter: 43.5mm/1.71 -Shaft Diameter：34mm/1.33 -Height: 25mm/0.98 -Hole Size: 6.0mm/0.23 -Manufactured with aluminum material which is safe and excellent durable and practical. -The volume knob is unique and simple smooth texture bring new look and beauty for your guitar. -Perfect condition great looks durable construction convenient for your installation and daily usage. -You can use this exquisite knurled finish knob to dress up your electric guitar or replace the dingy or old knobs. -When you need to use a knob for a long time this aluminum knob will quickly become your good helper.