diff --git a/sample.go b/sample.go
index <HASH>..<HASH> 100644
--- a/sample.go
+++ b/sample.go
@@ -1,5 +1,17 @@
 package zipkintracer
 
+import (
+	"github.com/openzipkin/zipkin-go"
+)
+
 // Sampler functions return if a Zipkin span should be sampled, based on its
 // traceID.
 type Sampler func(id uint64) bool
+
+var (
+	NeverSample        = zipkin.NeverSample
+	AlwaysSample       = zipkin.AlwaysSample
+	NewModuloSampler   = zipkin.NewModuloSampler
+	NewBoundarySampler = zipkin.NewBoundarySampler
+	NewCountingSampler = zipkin.NewCountingSampler
+)
feat: adds support for samplers.