This is my cordless impact (Milwaukee M18 2763) after 3 months of service in a professional setting (independent garage/workshop):
https://scontent-ord1-1.**.fbcdn.net/hphotos-xlp1/v/t1.0-9/11960260_10203848961058079_3840165005001412552_n.jpg?oh=66e631482a27569a0d32640524407427&oe=5672F1FD
https://scontent-ord1-1.**.fbcdn.net/hphotos-xtp1/v/t1.0-9/11227909_10203848961138081_5695867500185152528_n.jpg?oh=cf9e6b0efbd19c93562d7ec38f2382a8&oe=5676650E
https://scontent-ord1-1.**.fbcdn.net/hphotos-xft1/v/t1.0-9/11949478_10203848961098080_1329018989118243073_n.jpg?oh=85df5fdf410a4e6b409fb24606b93ef2&oe=56671BE4
Oil, brake fluid, coolant, tire shines, undercoats, WD40, grease, wax and anything else you touch on the car gets transferred to the rubber grip and they don't come off unless you blast it with brake clean.
I've never seen this happening to my pneumatic tools, the grips will, and do eventually swells and falls off but they're always replaceable, you will need a brand new housing on cordless to fix the grip.
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