diff --git a/src/sdk/output/rust.rs b/src/sdk/output/rust.rs
index 0124559..ec40951 100644
--- a/src/sdk/output/rust.rs
+++ b/src/sdk/output/rust.rs
@@ -160,6 +160,9 @@ pub fn generate_class<W: Write>(class: &Class, _sdk: &Sdk, w: &mut W) -> anyhow:
     if !is_class {
         writeln!(w, "pub struct {name}(UnsafeCell<[u8; {size}]>);")?;
 
+        writeln!(w, "unsafe impl Send for {name} {{}}")?;
+        writeln!(w, "unsafe impl Sync for {name} {{}}")?;
+
         write!(
             w,
             r#"
@@ -187,6 +190,24 @@ impl {name} {{
     } else {
         writeln!(w, "pub struct {name}(NonNull<UnsafeCell<u8>>);")?;
 
+        writeln!(w, "unsafe impl Send for {name} {{}}")?;
+        writeln!(w, "unsafe impl Sync for {name} {{}}")?;
+
+        write!(
+            w,
+            r#"
+impl AsUObject for {name} {{
+    fn as_uobject(&self) -> UObject {{
+        UObject(self.0)
+    }}
+
+    fn from_uobject(obj: UObject) -> Self {{
+        Self(obj.0)
+    }}
+}}
+"#
+        )?;
+
         write!(
             w,
             r#"