Fuji DPS graphite spinning reel seat, size 18 (DPSM18 / DPSD18) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/fuji-dps-reel-seat-size-18/  (sheet CC BY 4.0)
Basis: Secondary source: Mud Hole Custom Tackle (Fuji US distributor) (copy of the maker's figures; the maker publishes none directly)
Catalog version: 2026-10-20

Overall (mm): length 21.0, width 21.0, height 124
- Fuji's DPS is the standard pipe-style graphite spinning/casting reel seat; the size number (18) is the nominal seat size, not the bore.
- The bore of a size 18 seat is 18.0 mm, so the blank plus arbor/shim must build up to 18.0 mm at the seat position.
- The model is the published body tube only. Hood geometry, nut OD and thread pitch are not published in the size chart.
- Numbers are from Fuji's US distributor Mud Hole, because Fuji's own site could not be reached; marked secondary.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

dimension  value
Seat size (Fuji nominal)  18
Inside diameter (bore)  18.0 mm (0.709 in)
Outside diameter (body)  21.0 mm (0.827 in)
Overall length  124 mm (4.882 in)
Wall thickness implied by ID/OD  1.5 mm per side
DPSD (deluxe) length, same size  124 mm
Hood and nut outside diameter  not published
Weight  not published

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Mud Hole Custom Tackle (Fuji US distributor): Fuji Standard Graphite Spinning Reel Seat DPSM - size chart — web — Publisher's page; dimensions are facts — https://mudhole.com/DPSM-Standard-Graphite-Spinning-Reel-Seat
- Mud Hole Custom Tackle (Fuji US distributor): Fuji Deluxe Graphite Spinning Reel Seat DPSD - size chart — web — Publisher's page; dimensions are facts — https://mudhole.com/products/fuji-deluxe-graphite-spinning-reel-seat-dpsd

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/fuji-dps-reel-seat-size-18/index.json
API: https://xemstudio.com/api/geometry?object=fuji-dps-reel-seat-size-18