Description: 4 Pieces electric bass bridge roller saddle. Made of stainless steel, durable in use. Rollers can prevent strings from breaking, improve and keep the guitar in tone. Comes with mounting wrench screws. Great replacement parts for electric guitar bass. Size Chart: Size(L x W x H): Approx. 60 x 15 x 13mm / 2.36 x 0.59 x 0.51inch Package Includes: 4 Pieces Electric Bass Bridge Saddle 8 Pieces Mounting Screws 1 Piece Mounting Wrench