ProMaster Short Adapter Spigot 3/8-16 Male to 3/8-16 Male

$7.99

ProMaster Reversible Tripod Platform Bolt 1/4"-20 and 3/8"-16

$4.95

Short Adapter Spigot 3/8"-16 Male to 1/4"-20 Male

$6.99

Tripod Thread Adapter 3/8" to 1/4" - 5 Pack

$9.95

3 Legged Thing QR11-LC

$49.99