When connecting a sling with soft eyes to a lifting device the part of the lifting device which bears on the sling shall :
a) have a diameter of not more than one-third of the inside length of the eye and;
b) be essentially straight unless the bearing width of the sling is not more than 75 mm, in which case the bearing part of the lifting device may be curved but the radius of curvature shall be at least 0.75 times the bearing width of
the sling.
NOTE — Direct attachment to a lifting device of slings with soft eyes of a bearing width at the lifting device of more than 75 mm is not recommended.