1It protect unmounted rail areas from accidental damages. 2They can prevent damage to gear, such as rappelling ropes that may be abraded or cut by uncovered rail sections. 3Easy to install and remove, no any modifications needed. 4Made of durable rubber material, hard-wearing and rubbery grip surface can enhance the control. 5It is able to be applied to picatinny rail system. Features: It protect unmounted rail areas from accidental damages. They can prevent damage to gear, such as rappelling ropes that may be abraded orcut by uncovered rail sections. Easy to install and remove, no any modifications needed. Made of durable rubber material, hard-wearing and rubbery grip surface can enhancethe control. It is able to be applied to picatinny rail system. Specification: Condition: 100% Brand New Material: Rubber Color: Black, Sand Color(Optional) Size: Approx. 17.3 * 2.5cm / 6.8 * 1.0in Weight: Approx. 38g / 1.3oz Packing List: 4 x Ladder Rail Covers