Peco Single Slip (12 degree angle) Single slips were often used on double track lines to incorporate a trailing crossover into the access for a siding, goods yard etc. If you wish to mix wheel standards on your 00/H0 layout, this is the trackage to choose. Code 100 rail allows flange depths up to 1.6mm which means that both vintage and current stock will run happily together. The wide range of turnouts and crossings in this series includes every type, and the geometry of this range has been cleverly designed to make it easy to build convenient, complex and aesthetically pleasing formations using combinations of small, medium and large radius turnouts and crossings. Technical Specification: Length: 249mm Frog Angle: 12 Degrees OO gauge track from the world-renowned brand Peco. Hobbies stock a vast range of excellent Peco products for your model railway set. Whether you are a complete beginner or an experienced model maker you find a great selection at Hobbies. OO Gauge.