It includes an extra hinge so the hatch can be removed completely and can withstand being stepped on

The white arrow on the non-return valve shows the direction the water flows through it

mechanical drives

100 self-tapping screws in stainless and acid-resistant steel

and reverse polarity

Tecnoseal, Akselanode alu 82/45mm BL125128 It includes an extra hingeThe aluminum shaft anode from Tecnoseal is designed for installation on propeller shafts. It offers a longer service life and greater negative charge than traditional zinc anodes, which means better protection for the boats metal parts. Brand: Tecnoseal Inner : 45 mm Outer : 82 mm Product weight: 0. 5 kg : 82 mm 1: 45 mm Product dimensions: 77. 61 mm Made in: Italy Package dimensions: Size: 13 cm 17 cm 6 cm Gross weight: 0. 22 kg Aluminum shaft anodes