From same brand
Kink Master BMX Seat Clamp features a unique bolt, that is compatible with both a 5mm and 6mm Allen key. The Master Seat Clamp is intended for those riders who can relate to the struggle of not having the right tools by hand when needing them the most. Kink Master partly eliminates this challenge, since the chances are bigger you'll find a solution where both 5mm and 6mm fits.
The seat clamp comes in 6061-T6 aluminum and has a low profile design with a Kink logo on.