The blue turnbuckles are more than likely from the new TRF blue titanium turnbuckle series.
These should have been released last month by Tamiya but has been delayed 'til August.
We should have these in stock once they're available from Tamiya. Sorry...shameless plug!
RC Wrench for Blue Titanium - Turnbuckle Shaft
Item #42122 (COMING SOON)
RC 3x45mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42121 (COMING SOON)
RC 3x42mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42120 (COMING SOON)
RC 3x38mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42119 (COMING SOON)
RC 3x32mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42118 (COMING SOON)
RC 3x23mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42117 (COMING SOON)
RC 3x10mm Blue Titanium - Turnbuckle Shaft (2 pcs)
Item #42116 (COMING SOON)
http://www.tamiyausa.com/product/cat...=72000&page=51