Guitar String Trees Retainer Guides Black For Guitar Bass With Screws 4 Set

What is this?The guitar string trees string retainer guides are very important guitar replacement. Protect the string. It is suitable for various electric guitar and bassWhat will I get?Metal guitar string trees, are in size of : 5mm x 2.5mm x 2.5mm/0.2-inch x 0.1-inch x 0.1-inch(OD*ID*H)(suitable for D & G strings), 5mm x 2.5mm x 5mm/0.2-inch x 0.1-inch x 0.2-inch(OD*ID*H)(suitable for B & E strings)String retainer guides base, is in size of : 12mm x 7mm/0.47-inch x 0.28-inch(L*W), 2mm/0.08-inch hole diaIn the package of: 4 Set x Guitar string trees string retainer guidesIs there any advantages of the product?Not easy to rust, durable, long service life; Simple installation and convenient use; Small size, light weight, easy to carryHow to use it?Steps of installation: 1. Select the string retainers with appropriate size; 2. Remove the string retainers to be replaced; 3. Installed on electric guitarWhat should I notice?Please pay attention to selecting the string retainers with appropriate size, especially the length and width of the string retainers