Engine kit fits YAMAHA XT350 1985-2000
this kit is all socket allen. with no knurls.
These are highly polished stainless fasteners, not just a bag of bolts, comes with instructions, and sorted. specifically designed to fit  XT350

kit includes: a:cam chain tensioner 2 pieces b:right crankcase cover 16 pieces c:left crankcase cover 7 pieces d:crankcase 15 pieces e:exhaust head pipe 4 pieces f:intake 4 pieces g:oil filter cover (special bolt and o-ring not included) 2 pieces h:tachometer drive 1 piece 51 pieces total

here's a pic of another kit we do - so you can see the quality/finish