Ronstan Series 50 All Purpose Block - Double [RF51200] Brand_Ronstan while the heavier models have

while the heavier models have one full output (for example for your service battery) and two outputs of 10 A

The removable strainer protectsvalves and seal-seats from pipe scale and other debris

3mm(2-5/16") Length

Engine percent load

Ronstan Series 50 All Purpose Block - Double [RF51200] Brand_Ronstan while the heavier models haveSeries 50 All Purpose Block Double All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Swivel shackle head for full 360 degree rotation (non locking).