Pro Boat PRB1645 flex shaft, 12 in, 1/4 in flex with 3/16 in prop shaft (Sonicwake 48) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/pro-boat-prb1645-flex-shaft-sonicwake-48/  (sheet CC BY 4.0)
Basis: Secondary source: OzRC (dealer) (copy of the maker's figures; the maker publishes none directly)
Catalog version: 2026-10-20

Overall (mm): length 6.35, width 6.35, height 304.8
- Replacement flex shaft for the Super Sonicwake 48: a 1/4 in flex cable stepping down to a 3/16 in prop shaft.
- Figures are from OzRC (dealer); the prop stub length and drive-dog end are not published.
- 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
Flex shaft length  12 in (304.8 mm)
Flex shaft diameter  1/4 in (6.35 mm)
Prop shaft diameter  3/16 in (4.76 mm)
Fits  Pro Boat Super Sonicwake 48
Part number  PRB1645

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- OzRC (dealer): Pro Boat Flex Shaft Sonicwake 48 12in 1/4in Flex 3/16in Prop PRB1645 — web — Publisher's page; dimensions are facts — https://ozrc.com.au/products/pro-boat-flex-shaft-sonicwake-48-12in-1-4in-flex-3-16in-prop-prb1645

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/pro-boat-prb1645-flex-shaft-sonicwake-48/index.json
API: https://xemstudio.com/api/geometry?object=pro-boat-prb1645-flex-shaft-sonicwake-48