Trademark up easing (also known as a concave ramp and an up ramp) made from hemlock.
For both continuous Over-the-Post handrail and Post-to-Post systems.
This up easing is used to join a horizontal handrail or handrail fitting such as an opening cap or volute to a stair handrail, or to join a stair handrail to a vertical turn. For 41mm and 32mm spindles.
Note - Up easings require trimming to match the pitch of your stairs.