Ratchet Blocks

Fredrickson Ratchet Block
  Quite simply a nice reliable block - suitable for mainsheet applications. Very low friction when released - yet grippy under load. Take 5-8 mm rope comfortably. Ideal for Laser Mainsheet Block

Ronstan Smart Ratchet
Nice things come in small packages they say, well this one certainly is nice. With its clever ratchet adjustment, to adjust when it takes the strain, this is a must for small boat applications like the Topper
Harken Ratchet
Quite simply the untimate - for those of us who can still remember when we bought our first one - -and have still got it! It is a reliable block - suitable for mainsheet aplications. Very low friction when released - yet grippy under load. Take 5-8 mm rope comfortably. Ideal for Laser Mainsheet Block