Very easy work.
I like such helpers.

Golden mean.

Perfect ergonomic holding.
A beautiful look without any deficiencies.
Super accurate blending.

PRECISE Winter Red 0.7mm just turn up at my door, so i quickly cut a pair and give it a test with 8mm and 9.5mm steel ball to see what it can do.

Winter Red 0.7mm with 25/15mm @ 14.5cm active 28" draw..

8mm
1# 90.8
2# 90.8
3# 90.7
4# 90.7
5# 90.8
Avg: 90.7m/s = 297.5fps

9.5mm
1# 83.0
2# 80.6
3# 83.2
4# 82.0
5# 80.9
Avg: 81.9m/s = 268.7fps

Ok..I Don't think i need to say much any more, just go get a yourself roll and start destroy Targets or Pest Control at your Area..