Roisub Prisma Simple Invert Roller Head
The Roisub Prisma Simple Invert Roller Head has centralised yet moveable and replaceable dyneema stopper eyes to offer a simple and effective method for stopping your rubber & bridles. The Dyneema stopper makes this head very effective for all pre-tensioned systems.
The head uses a special dyneema with characteristics of strength and wear resistance for longevitiy and reliability. The hole before the pulleys can be used to insert a tensioning bolt and nut.
Materials and finishes of exceptional high quality, as in all Roisub equipment. The head is supplied along with the stainless steel screw threaded for fastening in some speargun tubes.
Roisub Head is suitable for barrels with an inner diameter around 25.7mm to 26mm. It is extremely compact, robust and light weight. The body of the head is floating, plugs and bolts are stainless steel, 6mm diameter.
These are simple pulleys (without bearings), designed for an affordable option for building or converting your invert roller speargun. They do not require maintenance.
On the back of the head, inside the spigot, there is an M10 threaded hole, allowing the use of any steel bolt, for optimising the balance and trim of the speargun.
The Head is derived from solid delrin, shaped by CNC machines and tested piece by piece to ensure maximum product quality.