Description: 1. Suit for different various kinds of flight controller, like APM 2.5 2.6, KK, MWC 2. Material: Glass fiber 3. Size: 10 x 8 x 1cm 3.9 x 3.1 x 0.4in 4. Weight: 25g Package includes: 1 x BW® Anti-vibration board 1 x BW® Anti-vibration ball 1 x BW® Double-sided adhesive If any questions, please do not hesitate to contact us and we will try our best to help you !