PRODUCT INFORMATION: This is a universal watertight plastic receiver box with silicone seals. Brass inserts are molded inside the receive box so you can torque the screws down securely without damage.Includes a rust-resistant stainless steel sealing plate for an airtight seal.Silicone port and seal can be separately replaced.Includes:1x Plastic Composite Receiver Box1x Plastic Composite Lid1x Stainless Steel Plate1x Silicone Seal1x Silicone Port2x M2.5x6 RS hardware4x M3x8 RS hardwareFits:Boom Racing BRX01Boom Racing D90Boom Racing D110Size:Length: 55.6mm (inside) / 60mm (outside)Width: 40mm (inside) / 46mm (outside)Height: 30mm (outer)See hole-to-hole measurements via picture.Spare Part:Silicone Port and Silicone Seal BRLC7033ATips to waterproof electronics:Apply a generous amount of grease or liquid tape into and around the two silicone sealings to create an airtight seal.