No split pin in this one Whisper, Alko just use a large hub nut, generally torqued up to 290Nm.
Yup, the Snap-on gun is a weapon. Had it for years and she's still going strong. The dust cap removal tool is invaluable for removing the Alko style dust caps. You can use a screwdriver, but it tends to bugger up the dust caps. This is so much quicker, safer and better for the customers' property.