![Harken 16mm Triple Block w/Becket [409]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/harken-16mm-triple-block-w-becket-409.webp)
16mm Triple Block with Becket
The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race.
Specifications:
- Sheave: 16mm / 5/8in.
- Length: 57mm / 2-1/4in.
- Weight: 43g / 1.5oz
- Maximum line: 5mm / 7/32in
- Maximum working load: 318kg/ 700lb
- Breaking load: 544kg / 1200lb
![Ronstan Series 20 Ball Bearing Block - Single - Cheek Rivet Mount [RF20151A]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-20-ball-bearing-block-single-cheek-rivet-mount-rf20151a.webp)
![Ronstan Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head [RF45130]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-40-ball-bearing-orbit-block-single-becket-cleat-swivel-head-rf451.webp)
![Ronstan Series 30 Ball Bearing Orbit Block - Single - Becket - Swivel Shackle Head [RF35100]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-30-ball-bearing-orbit-block-single-becket-swivel-shackle-head-rf3.webp)
![Ronstan Series 40 All Purpose Block - Single - Stand Up [RF41140]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-40-all-purpose-block-single-stand-up-rf41140.webp)
![Ronstan Series 20 ball Bearing Block - Triple - 2-Axis Shackle head [RF20302]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-20-ball-bearing-block-triple-2-axis-shackle-head-rf20302.webp)
![Ronstan Series 30 Ball Bearing Orbit Block - Triple [RF35302]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-30-ball-bearing-orbit-block-triple-rf35302.webp)
![Ronstan Series 50 All Purpose Block - Single - Universal Head [RF51100]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-50-all-purpose-block-single-universal-head-rf51100.webp)
![Ronstan Series 30 Ball Bearing Block - Single - Loop Top [RF30101]](https://www.boataccessorydepot.com/wp-content/uploads/2026/10/ronstan-series-30-ball-bearing-block-single-loop-top-rf30101.webp)