Manfrotto 015 1/4-Inch-20 Male 20mm Long to 3/8-Inch Female Adapter - Replaces 3358
28mm male adapter. This replaces the Manfrotto 3358. Attachment: 1/4'' screw; attachment 2: 3/8" female thread; length: 0.79 in.; material: brass; weight: 0.02 lbs.