New Hidden Thread foregrips (or rear grip) dress up SK2 Seats with custom made EVA for uploading hood. Size 16: 15/8" long tapers to 5/8. Size 17: 17/8" long tapers to 7/8. Size 17: 17/8" long tapers to 7/8. BGKS16RC or 17RC (Cork) or BGKS16E or 17E (EVA) fits SK2 part KSKSS16 or 17/ASH.