Standard Unit Height: 15-1/2″. Perfect for those of you who need the flexibility of different heights quickly. For “Hi” seating, insert the post into the floor base; for “Lo” seating, insert the seat mount into the floor base. Includes: KingPinT anodized finish post. 7001278 (1615201-EC) KingPinT Hi-Lo E-coat finish swivel KingPinT 7″ x 7″ stainless steel with satin finish base Hefty 1-3/4″ diameter post and reinforcement ring. Crafted with a 3/4″ E-coated steel pin. Display package. ABYC Class: (B) H-31 Fishing Only.