Attwood Marine 99026 360-Degree Positive Lock Swivel Spider Mount Ribbed Series

The Attwood Marine 99026 is a Millennium Series 360-Degree Positive Lock Swivel Spider Mount designed for ribbed stanchion pedestal systems. Built for boaters who demand reliable, wobble-free seat positioning, this low-profile swivel delivers smooth full-circle rotation with a secure positive lock mechanism.

Key Features:

• Full 360° rotation regulated by dual locking devices — lift the positive lock lever to rotate, drop it to lock in place
• Locks in 10° increments for precise, repeatable seat positioning
• Secondary twist control provides variable drag adjustment and can be tightened down for a firm lock
• Internal Delrin Bearing Cup ensures smooth, gall-free operation over years of use
• Silver powder coat finish for corrosion resistance in harsh marine environments
• Standard 5" four-hole mounting pattern for broad compatibility
• Designed for 2-7/8" ribbed (fluted) stanchion pedestals
• Compatible with Garelick/Attwood seat slides including models 21000, 75080, 75081, 75082, 75083, 20000, 20001, and 21001
• Meets ABYC-H31, Type A marine seating safety standards

The 99026 is the ribbed-stanchion version of the Millennium Series swivel spider, engineered to pair with fluted pedestal tubes for a secure, rattle-free fit. Whether fishing or cruising, this swivel provides the dependable seat rotation and lockdown performance expected from the Attwood/Garelick seating system.