Jefa drawbar axles are normally made of AlMgSi1 aluminium alloy (EN6082) On request they can be made of EN7075 high-strength aluminium alloy, of AISI 316 or AISI329 stainless steel.
For economic reasons it is advisable, when possible, to choose the diameter of the axis always 2 mm less than the round number (for example 88 instead of 90).
Type 1 is the most widely used for diameters greater than 50 mm. It is economical and does not require the axle to protrude from the bridge. Type 2 should be used for smaller diameters. Type 3 is extremely expensive for both the axle and the bar.